image size and quality: optimize existing images and stop compressing new ones

[nik]

Up to now, I have always prepared my product jpeg images, before uploading them to prestashop. I have been resizing all of them to standard dimensions and compressed them with tinypng. That is why I was keeping the setting "jpeg compression" to 100%, because I wanted to keep the same dimension, file size and quality. Practically, I did not want any transformation/compression at all to the original image.

After 2 years I have today realized, that 'original'  800x800 images, that are stored on prestashop and are the basis for the generated thumbnails, are 2-3 times larger than the local images I upload. Despite the fact that both are 800x800!

So I am facing two challenges:

1) I want that the 'original' image files, stored in prestashop after the upload, to be identical to my local image files. The already have the same dimension, I want to prevent any transformation to happen, which increases the file size.

2) I want to bulk compress my existing images, without re-upload them. There are plenty of addons in the marketplace, but I am not sure which one will do the job.

Could you help out? Thanks in advance, Nikos.

[adrian.sbalsa]

Also interested in this topic.
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[SmartDataSoft]

@adrian.sbalsa

If you want to do manually , in that case a better way to download the img folder via ftp and then compress using tinypng or other module. You will find some module in codecanyon.net which is cheap than addons market place , which can compress image from back end.

 

Thank you

[Ushavilash]

To maintain the original image quality in PrestaShop, set the JPEG compression to 100%. For bulk image compression without re-uploading, use modules  or compress images manually using tools like https://jpegcompressor.com/.